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基本情報
登録情報 | ![]() | |||||||||
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タイトル | Apo human Kv3.1 cryo-EM structure | |||||||||
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機能・相同性 | ![]() response to nerve growth factor / globus pallidus development / response to light intensity / response to potassium ion / response to fibroblast growth factor / response to auditory stimulus / corpus callosum development / positive regulation of potassium ion transmembrane transport / voltage-gated monoatomic ion channel activity involved in regulation of presynaptic membrane potential / Voltage gated Potassium channels ...response to nerve growth factor / globus pallidus development / response to light intensity / response to potassium ion / response to fibroblast growth factor / response to auditory stimulus / corpus callosum development / positive regulation of potassium ion transmembrane transport / voltage-gated monoatomic ion channel activity involved in regulation of presynaptic membrane potential / Voltage gated Potassium channels / delayed rectifier potassium channel activity / optic nerve development / neuronal cell body membrane / response to amine / voltage-gated potassium channel activity / kinesin binding / calyx of Held / axolemma / axon terminus / potassium ion transmembrane transport / voltage-gated potassium channel complex / dendrite membrane / cerebellum development / protein tetramerization / potassium ion transport / protein homooligomerization / response to toxic substance / cellular response to xenobiotic stimulus / presynaptic membrane / postsynaptic membrane / transmembrane transporter binding / cell surface / plasma membrane 類似検索 - 分子機能 | |||||||||
生物種 | ![]() | |||||||||
手法 | 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 2.65 Å | |||||||||
![]() | Botte M / Huber S / Bucher D / Klint JK / Rodriguez D / Tagmose L / Chami M / Cheng R / Hennig M / Abdul Rhaman W | |||||||||
資金援助 | 1件
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![]() | ![]() タイトル: Apo and ligand-bound high resolution Cryo-EM structures of the human Kv3.1 channel reveal a novel binding site for positive modulators. 著者: Mathieu Botte / Sophie Huber / Denis Bucher / Julie K Klint / David Rodríguez / Lena Tagmose / Mohamed Chami / Robert Cheng / Michael Hennig / Wassim Abdul Rahman / ![]() ![]() 要旨: Kv3 ion-channels constitute a class of functionally distinct voltage-gated ion channels characterized by their ability to fire at a high frequency. Several disease relevant mutants, together with ...Kv3 ion-channels constitute a class of functionally distinct voltage-gated ion channels characterized by their ability to fire at a high frequency. Several disease relevant mutants, together with biological data, suggest the importance of this class of ion channels as drug targets for CNS disorders, and several drug discovery efforts have been reported. Despite the increasing interest for this class of ion channels, no structure of a Kv3 channel has been reported yet. We have determined the cryo-EM structure of Kv3.1 at 2.6 Å resolution using full-length wild type protein. When compared to known structures for potassium channels from other classes, a novel domain organization is observed with the cytoplasmic T1 domain, containing a well-resolved Zinc site and displaying a rotation by 35°. This suggests a distinct cytoplasmic regulation mechanism for the Kv3.1 channel. A high resolution structure was obtained for Kv3.1 in complex with a novel positive modulator Lu AG00563. The structure reveals a novel ligand binding site for the Kv class of ion channels located between the voltage sensory domain and the channel pore, a region which constitutes a hotspot for disease causing mutations. The discovery of a novel binding site for a positive modulator of a voltage-gated potassium channel could shed light on the mechanism of action for these small molecule potentiators. This finding could enable structure-based drug design on these targets with high therapeutic potential for the treatment of multiple CNS disorders. | |||||||||
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マップデータ | ![]() | 1.4 MB | ![]() | |
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ヘッダ (付随情報) | ![]() ![]() | 10.7 KB 10.7 KB | 表示 表示 | ![]() |
画像 | ![]() | 116.3 KB | ||
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-検証レポート
文書・要旨 | ![]() | 324.1 KB | 表示 | ![]() |
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文書・詳細版 | ![]() | 323.7 KB | 表示 | |
XML形式データ | ![]() | 6.8 KB | 表示 | |
CIF形式データ | ![]() | 7.7 KB | 表示 | |
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-関連構造データ
関連構造データ | ![]() 7pqtMC ![]() 7pquC M: このマップから作成された原子モデル C: 同じ文献を引用 ( |
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類似構造データ | 類似検索 - 機能・相同性 ![]() |
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リンク
EMDBのページ | ![]() ![]() |
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「今月の分子」の関連する項目 |
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マップ
ファイル | ![]() | ||||||||||||||||||||
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ボクセルのサイズ | X=Y=Z: 0.82 Å | ||||||||||||||||||||
密度 |
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対称性 | 空間群: 1 | ||||||||||||||||||||
詳細 | EMDB XML:
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-添付データ
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試料の構成要素
-全体 : Detergent solubilized tetramer of human Kv3.1 potassium ion channel
全体 | 名称: Detergent solubilized tetramer of human Kv3.1 potassium ion channel |
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要素 |
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-超分子 #1: Detergent solubilized tetramer of human Kv3.1 potassium ion channel
超分子 | 名称: Detergent solubilized tetramer of human Kv3.1 potassium ion channel タイプ: complex / ID: 1 / 親要素: 0 / 含まれる分子: #1 |
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由来(天然) | 生物種: ![]() |
-分子 #1: Potassium voltage-gated channel subfamily C member 1
分子 | 名称: Potassium voltage-gated channel subfamily C member 1 タイプ: protein_or_peptide / ID: 1 / コピー数: 4 / 光学異性体: LEVO |
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由来(天然) | 生物種: ![]() |
分子量 | 理論値: 58.88318 KDa |
組換発現 | 生物種: ![]() |
配列 | 文字列: MGQGDESERI VINVGGTRHQ TYRSTLRTLP GTRLAWLAEP DAHSHFDYDP RADEFFFDRH PGVFAHILNY YRTGKLHCPA DVCGPLYEE ELAFWGIDET DVEPCCWMTY RQHRDAEEAL DSFGGAPLDN SADDADADGP GDSGDGEDEL EMTKRLALSD S PDGRPGGF ...文字列: MGQGDESERI VINVGGTRHQ TYRSTLRTLP GTRLAWLAEP DAHSHFDYDP RADEFFFDRH PGVFAHILNY YRTGKLHCPA DVCGPLYEE ELAFWGIDET DVEPCCWMTY RQHRDAEEAL DSFGGAPLDN SADDADADGP GDSGDGEDEL EMTKRLALSD S PDGRPGGF WRRWQPRIWA LFEDPYSSRY ARYVAFASLF FILVSITTFC LETHERFNPI VNKTEIENVR NGTQVRYYRE AE TEAFLTY IEGVCVVWFT FEFLMRVIFC PNKVEFIKNS LNIIDFVAIL PFYLEVGLSG LSSKAAKDVL GFLRVVRFVR ILR IFKLTR HFVGLRVLGH TLRASTNEFL LLIIFLALGV LIFATMIYYA ERIGAQPNDP SASEHTHFKN IPIGFWWAVV TMTT LGYGD MYPQTWSGML VGALCALAGV LTIAMPVPVI VNNFGMYYSL AMAKQKLPKK KKKHIPRPPQ LGSPNYCKSV VNSPH HSTQ SDTCPLAQEE ILEINRAGRK PLRGMSIGSL EVLFQ |
-分子 #2: POTASSIUM ION
分子 | 名称: POTASSIUM ION / タイプ: ligand / ID: 2 / コピー数: 4 / 式: K |
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分子量 | 理論値: 39.098 Da |
-分子 #3: water
分子 | 名称: water / タイプ: ligand / ID: 3 / コピー数: 8 / 式: HOH |
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分子量 | 理論値: 18.015 Da |
Chemical component information | ![]() ChemComp-HOH: |
-実験情報
-構造解析
手法 | クライオ電子顕微鏡法 |
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![]() | 単粒子再構成法 |
試料の集合状態 | particle |
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試料調製
緩衝液 | pH: 7.5 |
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凍結 | 凍結剤: ETHANE |
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電子顕微鏡法
顕微鏡 | FEI TITAN KRIOS |
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撮影 | フィルム・検出器のモデル: GATAN K2 SUMMIT (4k x 4k) 平均電子線量: 70.0 e/Å2 |
電子線 | 加速電圧: 300 kV / 電子線源: ![]() |
電子光学系 | 照射モード: OTHER / 撮影モード: BRIGHT FIELD / 最大 デフォーカス(公称値): 2.5 µm / 最小 デフォーカス(公称値): 0.8 µm |
実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |
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画像解析
初期モデル | モデルのタイプ: PDB ENTRY PDBモデル - PDB ID: |
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最終 再構成 | 解像度のタイプ: BY AUTHOR / 解像度: 2.65 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 使用した粒子像数: 362349 |
初期 角度割当 | タイプ: MAXIMUM LIKELIHOOD |
最終 角度割当 | タイプ: ANGULAR RECONSTITUTION |